Add Instance Router documentation and update connection methods guide

- Introduced new documentation for the Instance Router, detailing its functionality, use cases, and authentication flow.
- Updated the Hierarchical Router documentation to include a note about the Instance Router as an alternative access method.
- Added the Instance Router to the navigation structure in the docs.json file.
- Created a new MCP Connection Methods guide to clarify the differences between the Hierarchical Router and Direct MCP Endpoint, including examples and best practices for each method.

Author: Lasim

development/satellite/hierarchical-router.mdx

@@ -9,6 +9,10 @@ DeployStack Satellite implements a hierarchical router pattern to solve the MCP
 **Problem Solved**: Traditional MCP implementations expose all tools directly, consuming 40-80% of the context window before any actual work begins. The hierarchical router reduces this to \<1% while maintaining full functionality.
 </Info>
 
+<Note>
+**Alternative Access Method**: For direct MCP client integration without OAuth complexity, see [Instance Router](/development/satellite/instance-router) which provides token-based access to individual instances.
+</Note>
+
 For information about how tools are discovered and cached internally, see [Tool Discovery Implementation](/development/satellite/tool-discovery).
 
 ## The Context Window Problem